Improvement in pumps



F. T. FORBES.

. PUMPS. No. 172,265. Patentedan. 18, 1876.

Wn'NEssEsf w mf i* l! N, PETERS. PHOTDMTHOGRAPMER, WASHINGTON. D t.'4

' 'UNITED STATEs PATENT OFFICE.

. ERANCIS T. EORRES, OE CHICAGO, ILLINOIS, ASSIGNOR To GEORGE LANDER, OESAME PLACE.

IMPROVEMENT IN PUMPVS.

Specification forming part of Letters Patent No. 172,265, dated January18, 1876 application filed November 11, 1875.

ot' cylinder, in combination with half-ear hangers and a removable lug,for controlling the position ofthe valve; second, in a check-valveprovided with forked lifters, in combination with a rod extendingthrough the cylinder for operating the valve to clean it; third, in aScraper, which tits round the check-valve, incombination with rods foroperating it from the outside of cylinder, so as to clean the valve;fourth, in the combination of a suctionvalve with slotted lugs and rod,for operating the valve, so as to clean it, and with a lug forcontrolling the position of the valve.

In the drawings, Figure 1 is a side elevation, showing the exterior ofmy improvement. Fig. 2 is a longitudinal section of a pump provided Withmy improvement; Fig. 3, an enlarged inside view of the check-valve andattachments; Fig. 4, an enlarged inside view of the piston-valve andattachments. Fig. 5 shows the means for engaging the rod with slottedlugs on the suction-valve.

A represents the pump-cylinder, which is v provided with man-holes atits ends, which are closed by Clamps and covers C B, in the ordinarymanner. M represents the head of the pump, to which the check-valve L isattached. This valve is provided with a ground hinge, water-tightagainst the head, and bearing against half-ears b, projecting out fromthe head M, and it is held in place by a removable dog, r, fastened by ascrew put through it and into the said head.

To remove the valve the screw is to be p taken out to remove the dog,after which the The top part of the valve is provided with a forkedlifter, c, Fig. 3, that a notched. rod, E, may be turned, so as to lockinto the lifter and pull the valve open. Surrounding the sides andbottom of this valve is a closely-titting scraper,` N, which is rigidlyfastened to two rods, F, put through the head M.

By drawing out and pushing in on the rods F the valve will have removedfrom it any aecumulation thereon.

The induction-pipe K communicates with the valve L, and, in practice, aflexible pipe is to be attached to it, and extended into the vault orthe place to be cleaned. The seat It of the piston is attached to ascoop-shaped Conductor, R, for guiding the material elevated into thepiston. The valve P is hinged in the same manner and by similar means asthe valve L, and above it is placed a dog, r, to prevent it from risingtoo high to enable the valve to be removed through aman-hole above, inthe same manner as the valve L is removed. '.Io the face of the valve Pis attached a slotted lug, t, in which a rod, D, may be locked, to openand close-the valve for cleaning it, and for allowing material to beturned back into a vault, if an overload be taken up.

The pump, in use, is to be mounted on wheels, and a pipe is to beattached toit at m for conveying the material elevated into a portabletank or box for removal.

The rods D E are to be locked into the lifter c and lug t by beingpushed into the cylinder A, with the dat sides of their blades invertical position, and then turned one-fourth round.`

The releasing is done by a reverse movement.

For the convenience of using the rod D, I

employ two piston-rods, Gr, secured to the piston R at n n, Fig. 4.

I claim and desire to secure by Letters Patent- 1. The valve L, with itshinge fitting the head M water-tight, in combination with halfears b band removable dog r, as and for the purpose set forth.

2. The valve L provided with forked lifter 4. The combination of thevalve P, slotted c, in combination with the rod E, as specified. lug tt, and rod D7 and dog 1, substantially as 3. The scraper N, surroundingthe edges and for the purpose set forth.

and bottom of the cheokvalve, in combina.- FRANCIS T. FORBES. tion withrods F, extending through the head Witnesses:

of cylinder, for operating the scraper to clean G. L. CHAPIN,

the valve, as specified. OTTO ADEX.

